Improvement in spring bed-bottoms



1. w. CASE.

Spring Bed-Bottoms.

UNITED STATEs PATENT OFFICE.,

JAMES CASE, OF YPSILANTI, MICHIGAN, ASSIGNOR TO EDVARD W. GRANT AND ANDREW J. LEETCH, OF SAME PLACE.

'. IMPROVEMENT IN SPRING BED-BIOTTOMS.

Specification forming part of Letters Patent No. 154,454, dated August 25, 1874 g application filed June 4, 1874.

To all whom it may concern:

Be it known that I, JAMEs W. GAsE, of Ypsilanti, in the' county of Washtenawvand State of Michigan, have invented certain Improvements in Spring Bed-Bottoms, of which the following is a specification This invention relates to that class of spring bed-bottoms in which the slats are supported upon a frame composed of wooden springs, which are in turn supported upon a fraine tted to the bedstead, and the stiffness of which is rendered adjustable upon opposite sides, to adapt it for supporting persons -of different weights without sinking lowerupon one side than upon the other. 4

My improvement consists in the use, for the proper retention of the slats, of seats provided with eyes or loops, through which a cord is laced for strapping the slats down.

In the annexed drawings, Figure l is aperspective view of my improved spring bedbottom. Fig. 2 is an end elevation of the same. Figs. 3 and 4 are detail views, illustrating the sliding props.

The same letters of reference are used in -all the iigures in the designation of identical parts.

The spring bed-bottom is supported upon a frame composed of the side bars A A and end bars A' A', which is to be iitted within the bedstead. The spring-bottom proper consists of the side springs B B, end springs C C, constituting a rectangular frame, and springslats D, which rest upon cross -bars E E carried upon the spring-frame. The side springs B are supported upon two props, F, each, which can be readily adjusted, as to position, by sliding them, for the purpose of regulating the tension of the springs. Metallic straps F', embracing the bars A and springs B, and secured to the props, serve to maintain the latter in place between the former. The end springs C are each sustained by a central prop, G, which is fixed to the bar A', and provided with a metallic loop, G', to embrace the springs, which can thus move endwise onthe prop, by reason of which the entire springframe can have some lateral play. The slats D rest in ,seats H, secured upon the cross-bars E. As illustrated, all the seats of each cross-bar are united, and composed of a single bar of metal, looped up at proper intervals,- to form sides for the seats and eyes or loops for the retention. of the fasteningcord; they may, however, be all separate and independent. The sides H' of the seats should be less in height than the thickness of the slats. These sides are bent up longitudinally to the slats to form loops for the reception of a cord, I, which is laced through them, in the manner shown, to strap the slats down to their seats to prevent their accidental displacement.

What I claim as my invention, and desire to secure by Letters Patent, is-

The combination of the slats D, seats H, formed of the looped sides H', and cords I, substantially as and for the purpose specified.

In testimony whereof I have signed my name to this specication in the presence of 'two subscribing witnesses.

JAMES w. oAsE. 

